Theoretical studies on electroluminescent mechanism of a series of thermally activated delayed fluorescence emitters possessing asymmetric-triazine-cored triads

2018 ◽  
Vol 202 ◽  
pp. 102-106 ◽  
Author(s):  
Jinglai Zhang ◽  
Huijuan Yuan ◽  
Songyan Feng ◽  
Keke Wen ◽  
Xugeng Guo
Keyword(s):  
Delayed Fluorescence ◽  
Theoretical Studies ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated

Theoretical studies on full-color thermally activated delayed fluorescence molecules

2020 ◽  
Vol 8 (17) ◽  
pp. 5839-5846 ◽  
Author(s):  
Lei Liu ◽  
Qi Wei ◽  
Yajuan Cheng ◽  
Huili Ma ◽  
Shiyun Xiong ◽  
...  
Keyword(s):  
Delayed Fluorescence ◽  
Theoretical Studies ◽  
Efficiency Improvement ◽  
Thermally Activated Delayed Fluorescence ◽  
Exciton Dynamics ◽  
Detailed Mechanism ◽  
Thermally Activated ◽  
Full Color

This work provides a detailed mechanism for exciton dynamics in D–π–A–π–D TADF molecules and strategies for further efficiency improvement.

Experimental and theoretical studies of highly emissive dinuclear Cu(i) halide complexes with delayed fluorescence

2015 ◽  
Vol 44 (25) ◽  
pp. 11649-11659 ◽  
Author(s):  
Liju Kang ◽  
Jin Chen ◽  
Teng Teng ◽  
Xu-Lin Chen ◽  
Rongmin Yu ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Delayed Fluorescence ◽  
Theoretical Studies ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Halide Complexes ◽  
Experimental And Theoretical Studies

Experimental and theoretical studies of the photophysical properties of three novel emissive dinuclear Cu(i) halide complexes with thermally activated delayed fluorescence (TADF) are reported.

Solvent Dependence of Structural Dynamics and Spin-flip Processes in 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (ortho-3CzBN)

2020 ◽  
Author(s):  
Masaki Saigo ◽  
Kiyoshi Miyata ◽  
Hajime Nakanotani ◽  
Chihaya Adachi ◽  
Ken Onda
Keyword(s):  
Dft Calculations ◽  
Excited States ◽  
Structural Changes ◽  
Photophysical Properties ◽  
Delayed Fluorescence ◽  
Time Resolved ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Solvent Dependence ◽  
Acetonitrile Solutions

We have investigated the solvent-dependence of structural changes along with intersystem crossing of a thermally activated delayed fluorescence (TADF) molecule, 3,4,5-tri(9H-carbazole-9-yl)benzonitrile (o-3CzBN), in toluene, tetrahydrofuran, and acetonitrile solutions using time-resolved infrared (TR-IR) spectroscopy and DFT calculations. We found that the geometries of the S1 and T1 states are very similar in all solvents though the photophysical properties mostly depend on the solvent. In addition, the time-dependent DFT calculations based on these geometries suggested that the thermally activated delayed fluorescence process of o-3CzBN is governed more by the higher-lying excited states than by the structural changes in the excited states.<br>

New hole transport styrene polymers bearing highly π-extended conjugated side-chain moieties for high-performance solution-processable thermally activated delayed fluorescence OLEDs

2021 ◽  
Vol 12 (11) ◽  
pp. 1692-1699
Author(s):  
Ji Hye Lee ◽  
Jinhyo Hwang ◽  
Chai Won Kim ◽  
Amit Kumar Harit ◽  
Han Young Woo ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Delayed Fluorescence ◽  
Hole Transport ◽  
Side Chain ◽  
Solution Processed ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Turn On ◽  
Solution Processable

New polystyrene-based polymers with high π-extended hole transport pendants were synthesized to obtain a low turn-on voltage and high efficiency in solution-processed green TADF-OLEDs.

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